Mark Wallingers Self Reflection show, in which he has installed a mirror across the entire ceiling of Sigmund Freuds study at the Freud Museum in Londons Hampstead, is one of the most successful of the many artistic interventions that have taken place in this iconic room. As well as its richly chiming references to Freudian notions surrounding the doubled self and self-reflection, it also presents a weirdly disorientating and decidedly unheimlich perspective for anyone entering the room, especia